66516760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40559}}^1$

素因数の和:40611

約数の個数: 32

約数和(自身を含む): 153316800

約数和(自身を除く): 86800040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 40559, 81118, 162236, 202795, 324472, 405590, 811180, 1622360, 1662919, 3325838, 6651676, 8314595, 13303352, 16629190, 33258380, 66516760]

約数ペア:

[(1, 66516760), (2, 33258380), (4, 16629190), (5, 13303352), (8, 8314595), (10, 6651676), (20, 3325838), (40, 1662919), (41, 1622360), (82, 811180), (164, 405590), (205, 324472), (328, 202795), (410, 162236), (820, 81118), (1640, 40559)]